Debian dla-4679 : libd3dadapter9-mesa - security update

critical Nessus Plugin ID 326485

Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dla-4679 advisory.

------------------------------------------------------------------------- Debian LTS Advisory DLA-4679-1 [email protected] https://www.debian.org/lts/security/ Tobias Frost July 13, 2026 https://wiki.debian.org/LTS
-------------------------------------------------------------------------

Package : mesa Version : 20.3.5-1+deb11u1 $bookworm_VERSION CVE ID : CVE-2026-40393 Debian Bug :

A vulnerability has been found in the mesa 3D graphics library, possibly allowing out of bound memory access by craftet input.

CVE-2026-40393

An out-of-bounds memory access can occur in WebGPU because the amount of to-be-allocated data depends on an untrusted party, and is then used for alloca.

For Debian 11 bullseye, this problem has been fixed in version 20.3.5-1+deb11u1.

For Debian 12 bookworm, this problem has been fixed in version $bookworm_VERSION.

We recommend that you upgrade your mesa packages.

For the detailed security status of mesa please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/mesa

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS Attachment:
signature.asc Description: PGP signature

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade the libd3dadapter9-mesa packages.

Plugin Details

Severity: Critical

ID: 326485

File Name: debian_DLA-4679.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Debian Local Security Checks

Published: 7/13/2026

Updated: 7/13/2026

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.97

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-40393

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, p-cpe:/a:debian:debian_linux:libegl1-mesa, p-cpe:/a:debian:debian_linux:mesa-vulkan-drivers, p-cpe:/a:debian:debian_linux:libosmesa6, p-cpe:/a:debian:debian_linux:libd3dadapter9-mesa-dev, p-cpe:/a:debian:debian_linux:libgl1-mesa-glx, p-cpe:/a:debian:debian_linux:libxatracker-dev, p-cpe:/a:debian:debian_linux:libgles2-mesa-dev, p-cpe:/a:debian:debian_linux:libgl1-mesa-dri, p-cpe:/a:debian:debian_linux:libgles2-mesa, p-cpe:/a:debian:debian_linux:libgbm1, p-cpe:/a:debian:debian_linux:mesa-opencl-icd, p-cpe:/a:debian:debian_linux:libosmesa6-dev, p-cpe:/a:debian:debian_linux:libglapi-mesa, p-cpe:/a:debian:debian_linux:libwayland-egl1-mesa, p-cpe:/a:debian:debian_linux:libgbm-dev, p-cpe:/a:debian:debian_linux:libegl-mesa0, p-cpe:/a:debian:debian_linux:libxatracker2, p-cpe:/a:debian:debian_linux:libd3dadapter9-mesa, p-cpe:/a:debian:debian_linux:mesa-va-drivers, p-cpe:/a:debian:debian_linux:libegl1-mesa-dev, p-cpe:/a:debian:debian_linux:libglx-mesa0, p-cpe:/a:debian:debian_linux:mesa-common-dev, p-cpe:/a:debian:debian_linux:libgl1-mesa-dev, p-cpe:/a:debian:debian_linux:mesa-vdpau-drivers

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 7/13/2026

Vulnerability Publication Date: 4/12/2026

Reference Information

CVE: CVE-2026-40393

Detections

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